I am plaining on seeing how far I can take a stock Bottom end 7 bolt and I saw that the recorded is 554HP ? If anyone has any info on this guy's set up and what it took for him to get 554hp please post it for me ! Also was his a 1g or 2g 7 bolt

The guy on 1320 Video did 450+ at the wheels and I want to try it my self to see how far I can push my stock 7 bolt .

My 7 bolt has compression of 180 accross and has 118K on it
So far what all I am doing to the Bottom end is Removing the BS , and adding ARP rod bolt's to try and hold it together and that is all I am doing to the bottom end.

To the head I will be leaving a 7 bolt head on and doing a light/mild port and polish job , crower valve springs and retainers , FP 2's or 2x's , 1g intake manifold or magnus have yet to decide , 1g TB , ARP head studs ...

Tunning will be done by DSM link

Turbo will be a 60-1 or bigger

Fuel will be 880cc injectors , Supra Fuel pump or twin Walboro's (which should I do?)
Aeromotive FPR , all SS lines .

Drivetrain is ACT 2900 , ACT flywheel

so please throw info my way , if you see something wrong do not be affraid to hurt my feeling's

Thanks

GSTeclipse said:

I am plaining on seeing how far I can take a stock Bottom end 7 bolt and I saw that the recorded is 554HP ? If anyone has any info on this guy's set up and what it took for him to get 554hp please post it for me ! Also was his a 1g or 2g 7 bolt

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Ok... so not being afraid of hurting your feelings . . . The only true way to determine the limit of your engine internals is to pop it. It really discusts me to see guys willing to destroy a perfectly sound and efficiently operating machine for the sake of pushing it to the ragged edge to 'see how far I can take a stock Bottem end'... I don't know you, but I would assume that you would probably be satisfied with a reliable and "streetable" 450whp. This is entirely possible. So . . .

GSTeclipse said:

My 7 bolt has compression of 180 accross and has 118K on it
So far what all I am doing to the Bottom end is Removing the BS , and adding ARP rod bolt's to try and hold it together and that is all I am doing to the bottom end.

Click to expand...

A good engine... don't blow her up just yet

GSTeclipse said:

To the head I will be leaving a 7 bolt head on and doing a light/mild port and polish job , crower valve springs and retainers , FP 2's or 2x's , 1g intake manifold or magnus have yet to decide , 1g TB , ARP head studs ...

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--ARP head studs on a stock composit asket has been proven to hand more than what your bottem end can handle .

--Porting a 2G head has been better than swapping in a 1G head for some .

--I say no to crower since you can get MAnley Springs from SBR for so cheap and they can handle the lobe profile of FP2Xs to above 9500 rpms (according to SBR). Ihave FP2Xs with manley springs and i rev to 8500 without a worry. No "floaties" .

GSTeclipse said:

Tunning will be done by DSM link

Click to expand...

Best upgrade I've ever done... Should have bought it before anything else (even a Manual Boost Controller)

GSTeclipse said:

Turbo will be a 60-1 or bigger

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This turbo is not as good as a 50trim with pump gas... But is close. For insurance i recommend a cheap water injection kit (or fab you're own for even less) A 56trim would be a good choice after the 60-1 if you feel that the 60-1 is not enough four your goals... Although, a 60-1 can throw enough flow to melt your engine(650 whp or something crazy like that). So at this point there's no reason to go bigger unless you have money making goals with your car at the track.

GSTeclipse said:

Fuel will be 880cc injectors , Supra Fuel pump or twin Walboro's (which should I do?)
Aeromotive FPR , all SS lines .

Click to expand...

A walbro 255HP flows almost as much as a Supra TT fuel pump. Individually, either will flow enough fuel to supply the horse power it takes to bend your rods (450+ whp)

GSTeclipse said:

Drivetrain is ACT 2900 , ACT flywheel

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ACT flywheel is a great choice. Some have had issues with fidanzas dropping their bolts on a hard pull ! Look at SBRs 3500 and 400 clutch kits. Cheaper than the ACT 2600-2900 and perform about the same, with less pedal pressure.

GSTeclipse said:

so please throw info my way , if you see something wrong do not be affraid to hurt my feeling's

Thanks

Click to expand...

Finally, I'll say SEARCH. Because everything in mentioned can be easily found on this forum. This forum is your best frien at this point. Use all the resourses it gives you.

Happy wrenching...

Well I am not worried about this good 7 bolt as to I alrady have another sitting aside being built anyways so I am ok on that note !

I already have installed the ACTflywheel , ACT2900 clutch and on the 2900 The pedel pressure it alot less then that of the 2600 , the 2900 feels more like a 2100 to me .

I had a 97 GST with a AGP RS49(50 trim) and I loved it @ 20psi on a completly stock 7 bolt motor I dynoed 330whp on my 1st and only pull never had a chance to tune it due to boost leak issues and the A/F was around 10.9-11.0 so I was rich and new I was safe for awhile but I know a regular 50 trim would not push near the 500whp or better mark unless I talked Ben @ AGPTurbo to do me a Dre. Spec 50 trim which he did 500whp+ on pump gas .........

Another reason I am wanting to go big now is so I don't have to do it later down the road so when I was talking about fuel as being either a supra fuel pump or walboro 255 or twin walboro's I am wanting to make sure I am getting all the fuel I need now and later down the road

I have been looking around at Water/Methonal injection kit's and I have put that on my list as well for when I get the extra $$ for it and I will make sure I have it to keep my knock count down and so I don't have to run High Octane on the street my pocket's are not that deep

But thanks for the pointer's on the Valve spring's and retainer's with the FP 2x's I am looking into those right now

7 bolts can make power sure but wont last long.

TSIfreek, this is just bad information. Almost eveyone I know still uses a 7 bolt. My friends daughter still uses a built 7 bolt. All of them are in the 12's or faster here at 5800ft. Thats a big deal up here. My friends daughter made 590whp. Everyone of those cars is daily driven in rode hard and put up wet. If your motor has a good tune, IT WILL LAST. No ifs ands or butts. Six bolts are not indestructable like everyone thinks.

That guy who made the 556hp is still running a stock setup. He uses arp head studs, HKS 272's and a four layer head gasket. THAT IS IT. Everything down to the stock rod bolts are used. He ran a best of 11.0 with dsmlink and 10.7 with AEM.

It is all in the tuning. Keep it safe and it will last. Run it on the edge, and it will last, maybe not as long though.

Oh yea, it is a 1997 GST eclipse.

Steven

biglady112 said:

TSIfreek, this is just bad information. Almost eveyone I know still uses a 7 bolt. My friends daughter still uses a built 7 bolt. All of them are in the 12's or faster here at 5800ft. Thats a big deal up here. My friends daughter made 590whp. Everyone of those cars is daily driven in rode hard and put up wet. If your motor has a good tune, IT WILL LAST. No ifs ands or butts. Six bolts are not indestructable like everyone thinks.

That guy who made the 556hp is still running a stock setup. He uses arp head studs, HKS 272's and a four layer head gasket. THAT IS IT. Everything down to the stock rod bolts are used. He ran a best of 11.0 with dsmlink and 10.7 with AEM.

It is all in the tuning. Keep it safe and it will last. Run it on the edge, and it will last, maybe not as long though.

Oh yea, it is a 1997 GST eclipse.

Steven

Click to expand...

I just wouldnt waist my time putting my money in a 7 bolt and then slapping a 2900 clutch on it you are just asking for problems. There are alot of engine builders that wont even look at a 7 bolt because of the high probabilty of crankwalk in a high HP aplication.
I am not saying every 7 bolt walks but with a 2900 or even a 2600 the % goes up for a failure. Tuning will keep it out of detionation but will it help from walking??

biglady112 said:

TSIfreek, this is just bad information. Almost eveyone I know still uses a 7 bolt. My friends daughter still uses a built 7 bolt. All of them are in the 12's or faster here at 5800ft. Thats a big deal up here. My friends daughter made 590whp. Everyone of those cars is daily driven in rode hard and put up wet. If your motor has a good tune, IT WILL LAST. No ifs ands or butts. Six bolts are not indestructable like everyone thinks.

That guy who made the 556hp is still running a stock setup. He uses arp head studs, HKS 272's and a four layer head gasket. THAT IS IT. Everything down to the stock rod bolts are used. He ran a best of 11.0 with dsmlink and 10.7 with AEM.It is all in the tuning. Keep it safe and it will last. Run it on the edge, and it will last, maybe not as long though.

Oh yea, it is a 1997 GST eclipse.

Steven

Click to expand...

Who is this guy?

TSIfreek said:

I just wouldnt waist my time putting my money in a 7 bolt and then slapping a 2900 clutch on it you are just asking for problems.

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Well in that's true in earlier 7 bolt 96 and up's my car is a 95 but was built in 94 so the block is later model 7 bolt which really never had any problems ! So the 2900 is just fine .
Also for your info I had a 97 GST that had a stock 7 bolt and ran a ACT 2600 in it from 60K miles to 90K miles and let me tell you I drove the ever living shit out of that 97 GST had pleant of 1/4 runs , street runs and the crank never moved one bit I measured it on 3 diffrent times and the last time being when my BS belt broke killing my motor not all 7 bolts where bad just a hand full of them . The clutch that was in my 95 before I replaced it was a 4 puck clutch why there was I have no clue . But it had been in it for awhile and I measured the crank to double check it ....So Crankwalk is not even on my mind at all

biglady112 said:

That guy who made the 556hp is still running a stock setup. He uses arp head studs, HKS 272's and a four layer head gasket. THAT IS IT. Everything down to the stock rod bolts are used. He ran a best of 11.0 with dsmlink and 10.7 with AEM.

Click to expand...

Ok so we got :
Cams - HKS 272's
Arp Head studs
4 Layer head gasket
Tunning - DSMLink/AEM

So the guy had a stock port 2g head , stock 2g IM , Stock 2g TB , Stock Ignition, ?

What turbo was he using ?
Boost?
Fuel was C16 I am sure right?
Fuel pump ?
What size injectors? all this will make more sense to what all he had beside what you listed

I know I am being nosie but these are thing's that will help me in the long run of making a High HP Stock bottom end 7bolt

Thanks so far for the help and pointers

HIs name is Jeff he is from Chicago.

Stock head casting, 2g intake manifold, stock ingnition I believe.
T4-undisclosed I will let you look for the answer for that(I am not at liberty to say as I don't know him)
36psi
Leaded gas(maybe C16)
Not sure on fuel pump
I believe 950's

Videos no longer work or I would link them for you. Saw 60lbs/min on the 551(this is the correct total) hp run

Ran 11.0 with dsmlink. Ran 10.7 with AEM.

Steven

TSIfreek said:

I just wouldnt waist my time putting my money in a 7 bolt and then slapping a 2900 clutch on it you are just asking for problems. There are alot of engine builders that wont even look at a 7 bolt because of the high probabilty of crankwalk in a high HP aplication.
I am not saying every 7 bolt walks but with a 2900 or even a 2600 the % goes up for a failure. Tuning will keep it out of detionation but will it help from walking??

Click to expand...

So if your chances of getting crankwalk increase with the pressure of the clutch then shouldn't an automatic have a 0% chance of getting crankwalk? So what causes an automatic car to crankwalk then? A heavy pressure plate may speed up the failure but it's only speeding up what will inevitably happen anyways. There is obviously a deeper problem then just pressure plates if automatics have the same issue.

Now the real question.....how many people have personally witnessed crankwalk first hand? If you say yes then my next question is going to be how did you know it was crankwalk and how long ago was this?

I have a feeling that there have been very few if any engines crankwalking over the past few years. I think that the motors that were actually going to crankwalk have already done so and its now just a part of dsm history. If it was an early machining issue then this should hold true. If it's a flaw in the engine design itself then failures should continue at a steady rate which I don't think is the case. I also think that the crankwalk problem has been blown way out of proportion. It may have been an issue back in the mid - late 90's but I think most of the people who talk about it now are just going off what they read happend several years ago.

YES. I had my engine in my laser walk 2 years ago. I then proceded to have every thing machined and a new crankshaft. 1 year and 10000 miles later it decided to go for a walk again. I personally have had very bad luck with it. I knew it was walked because of the loud clacking noise it made oh and also because the could move the crank back and forth atleast 1/8 of an inch both times. My car is probally a freak that attracts crank walk that is why i am selling it and now own a different dsm.
BTW im reddsm on SCR

GSTeclipse said:

Ok so we got :
Cams - HKS 272's
Arp Head studs
4 Layer head gasket
Tunning - DSMLink/AEM

So the guy had a stock port 2g head , stock 2g IM , Stock 2g TB , Stock Ignition, ?

What turbo was he using ?
Boost?
Fuel was C16 I am sure right?
Fuel pump ?
What size injectors? all this will make more sense to what all he had beside what you listed

I know I am being nosie but these are thing's that will help me in the long run of making a High HP Stock bottom end 7bolt

Thanks so far for the help and pointers

Click to expand...

I thimk he has used two different turbo set ups on the car. I know for a fact the first turbo was a t4 based 60-1 with a .70 ar on the compressor and turbine housings. He is also running a SFP tubular manifold. He was alos running the stock 2g intake manifold. He made 550whp with that set up and DSMlink. I thought I read somehting about him switching to a sc61 compressor, but I am not entirely sure. He was running 34psi when he made 550whp with dsmlink. He posts on the AEMforums and I believe there is a thread when he ran 10s that may list his current turbo set up.

I have been waiting to go to the dyno on c16 so I can rival his numbers on my stock 7 bolt, but a hole in the bell housing has the car down. I am sure it wouldn't be too hard for me to pick up 130whp on c16 It would be nice to steal his thunder a little bit, but you won't see my car cutting 10.7s.

I love the indestructable six bolt attitude these 1g guys have.

Yeah, crazy 1g guys. I'm not scared of anything happening to my 7 bolt.

4stAir said:

Who is this guy?

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Jeff Harrington from IL.

Quoted from my thread on dsmlink:

Jeff moved to Arizona. He still has his car I believe.

Anyway, his mod list when he put down 550whp.

AMS intercooler, SFP T4 manifold, 950cc injectors, DSMLink, Aeromotive fuel pump(I think), fuel cell, T4 turbo 60-1 compressor and t350 turbine. Shep tranny, ACT 2600.

Click to expand...